1565237952 has 112 divisors (see below), whose sum is σ = 4801697280. Its totient is φ = 499048704.

The previous prime is 1565237939. The next prime is 1565237953. The reversal of 1565237952 is 2597325651.

1565237952 is a `hidden beast` number, since 1 + 5 + 6 + 523 + 79 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1565237898 and 1565237907.

It is not an unprimeable number, because it can be changed into a prime (1565237953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20053 + ... + 59435.

Almost surely, 2^1565237952 is an apocalyptic number.

1565237952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1565237952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2400848640).

1565237952 is an abundant number, since it is smaller than the sum of its proper divisors (3236459328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1565237952 is a wasteful number, since it uses less digits than its factorization.

1565237952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39427 (or 39411 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The square root of 1565237952 is about 39563.0882515508. The cubic root of 1565237952 is about 1161.0745967600.

The spelling of 1565237952 in words is "one billion, five hundred sixty-five million, two hundred thirty-seven thousand, nine hundred fifty-two".